(simile) To be a very strong swimmer.

(simile, humorous) To walk with one arm horizontally at the side, with arm bent at the elbow facing up, and the other arm horizontally at the side with arm bent at the elbow facing down.

(immunology) Any of a class of proteins that are single, membrane-spanning, non-catalytic receptors that identify structurally preserved molecules acquired from microbes.

(simile) Synonym of sleep like a log

Ellipsis of if it looks like a duck, swims like a duck, and quacks like a duck, then it probably is a duck.

(simile) Idly, listlessly, or uselessly.

(simile) Synonym of swear like a trooper

(simile, vulgar) To be extremely amorous while copulating.

(simile) repetitive, but very easy.

Alternative form of slow as molasses in January