(transitive) To give suck to; to nurse at the breast, udder, or dugs. / (intransitive) To nurse; to suck milk from a nursing mother. / (transitive) To nurse from (a breast, nursing mother, etc.).

An infant that is still being breastfed (being suckled) by its mother. / A young mammal not yet weaned and still being fed milk by its mother.

present participle of suckle

present participle of sucker punch

plural of sucker

(idiomatic) An unexpected punch or similar blow. / (idiomatic) A disabling punch targeting a place which is not normally acceptable in a "fair fight", such as on the back of the head.

(idiomatic) To deliver an unexpected blow.

Alternative spelling of bloodsucker

plural of blood-sucker (alternative spelling of bloodsuckers).

(obsolete) The tenant of a sucken, who under the law of thirlage had to mill his grain at the mill of his feudal lord or thirl.