To come without an appointment to a place that would normally require one. / Used other than figuratively or idiomatically: see walk, in.

(transitive, dated) To attend as a sweetheart; to go out with.

(biochemistry) A particular histidine kinase

simple past tense and past participle of walk in on

present participle of walk in on

simple past tense and past participle of walk in

present participle of walk in

plural of walk

Third-person singular simple present indicative form of walk

Third-person singular simple present indicative form of walk into