present participle of sap

The act by which something is sapped or depleted. / The act of excavating trenches. / The act of being struck with a sap or club.

plural of sapping

(uncountable) The juice of plants of any kind, especially the ascending and descending juices or circulating fluid essential to nutrition. / (uncountable) The sapwood, or alburnum, of a tree.

(transitive) To drain, suck or absorb from (tree, etc.). / (transitive, figuratively) To exhaust the vitality of.

(countable, US, slang) A short wooden club; a leather-covered hand weapon; a blackjack.

(transitive, slang) To strike with a sap (with a blackjack).

(military) A narrow ditch or trench made from the foremost parallel toward the glacis or covert way of a besieged place by digging under cover of gabions, etc.

(transitive) To subvert by digging or wearing away; to mine; to undermine; to destroy the foundation of. / (transitive, military) To pierce with saps.

Initialism of Scientific Advisory Panel. / (South Africa) Initialism of South African Police. / (South Africa, obsolete) Initialism of South Africa Party.